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Y_Kistochka [10]

2 years ago

5

A student earned a grade of 82% on a math test that had 20 problems. How many problems on this test did the student answer corre

ctly? (round to the nearest whole number)

1 answer:

rosijanka [135]2 years ago

6 0

<h3>Answer: 16</h3>

Work Shown:

82% of 20 = 0.82*20 = 16.4 which rounds to 16

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Factor a ^3 - 3 + 3a^2 - a.

mafiozo [28]

Answer: (a+3)(a+1)(a−1)

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Step-by-step explanation:

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3 years ago

The National Oceanic and Atmospheric Administration tracks the amount of oysters harvested from the Chesapeake Bay each year:

Alexandra [31]

The EXPONENTIAL REGRESSION equation obtained by fitting the data is $y = 58.031(0.964)^x$

To obtain the exponential regression equation which models the data, we could use technology, we involves Inputting the data into an EXPONENTIAL REGRESSION CALCULATOR or EXCEL

Using an exponential regression calculator :

The regression equation obtained is :

$y = 58.031(0.964)^x$

The general function of an exponential regression function is : $AB^x$

A = 58.031 = Initial value ; B = Decay factor

Hence, the EXPONENTIAL REGRESSION EQUATION obtained using technology is : $y = 58.031(0.964)^x$

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brainly.com/question/11169800

6 0

3 years ago

An equilateral triangle has a perimeter of 90 inches. Find the area of the equilateral triangle in simplest radical form.

KIM [24]

Answer:

450

Step-by-step explanation:

If the perimeter is 90 inches then each side must equal 30 inches. To find the area of a triangle you mulptiply the base by the height and divide by 2. The base is 30 and the height is 30. 30*30=900. 900/2=450.

6 0

3 years ago

Maya had $27. She spent all the money on buying 3 burgers for $x each and 2 sandwiches for $y each. If Maya would have bought 2

defon

Answer:

Option C

The student's conclusion is correct because the solution to the system of equations $3x+2y=27$ and $2x+y=16$ is $(5,6)$

Step-by-step explanation:

Let

x------> the cost of each burger

y-----> the cost of each sandwich

we know that

$3x+2y=27$ -----> equation A

$2x+y=(27-11)$

$2x+y=16$ ----> equation B

Solve the system of equations

Multiply the equation B by $-2$

$-2(2x+y)=-2*16$ -----> $-4x-2y=-32$ ------> equation C

Adds equation A and equation C

$3x+2y=27 \\-4x-2y=-32\\ ----------\\ 3x-4x=27-32\\ -x=-5\\x=5$

Substitute the value of x in the equation B

$2(5)+y=16$

$10+y=16$

$y=6$

The solution of the system of equations is the point $(5,6)$

so

The price of each burger is $\$5$

The price of each sandwich is $\$6$

6 0

3 years ago

Read 2 more answers

I need help with this equation: <br><br> 12x+15=99

statuscvo [17]

Answer:

=7

Step-by-step explanation:

3 0

3 years ago